## Question

if there are Three Fe+2  For a Fe+3 in FexO, What is the value of x?

Joshi sir comment

3FeO.1Fe2O3 = Fe5O6 = Fe5/6O

but your answer was not listed in Options: the options were A)9/8 B)2/3 C)8/9 D)2/9

BONEY HAVELIWALA 6 year ago is this solution helpfull: 1 0

frnd , is the answer is 9/8 ????

SARIKA 6 year ago is this solution helpfull: 2 0

No sarika. Its 8/9. but dont know how!

BONEY HAVELIWALA 6 year ago is this solution helpfull: 1 0

BTW sarika Are you a Student? or a teacher?

BONEY HAVELIWALA 6 year ago is this solution helpfull: 0 0

well , here oxdn no. will be also in role

see 3FeO.Fe2O3   is given in the question , for feo fe oxdn state = 2 and for 3 such compd total is 3x2=6  , similar case with fe2o3 ,ie3   the total fe valency = 6+3=9

now come to oxygen  here there are 4 oxy thus oxdn st = 4x2=8

its turn of find formula for that ,

Fe    O

9        8   ( these are valency ie   now cross multiply them )

so u get the formula =  Fe8 O9  which also can be written as Fe8/9 O

hope this will serve ur purpose

SARIKA 6 year ago is this solution helpfull: 1 0